Network Security Archives

Deploying Security Onion: A Practical Guide to Network Security Monitoring (NSM)

June 1, 2026

Transform a spare server into a powerful threat-hunting machine. This guide shows you how to deploy Security Onion to gain deep visibility into your network traffic.

Security

Defending Against ARP Spoofing and Man-in-the-Middle Attacks on Linux with arpwatch and arptables

May 21, 2026

ARP spoofing lets an attacker silently intercept all traffic on your local network — and most standard security setups miss it entirely. This guide covers how to detect ARP-based Man-in-the-Middle attacks using arpwatch, block them with static ARP entries and arptables, and build a lightweight monitoring script for any Linux machine.

Networking

Deploying Network Access Control (NAC) with PacketFence: Automate Device Authentication on Wired and Wi-Fi Networks

April 28, 2026

PacketFence is an open-source NAC platform that controls which devices can connect to your wired and Wi-Fi network using 802.1X, RADIUS, and dynamic VLAN assignment. This guide covers installation, switch configuration, Active Directory integration, and deployment tips drawn from a real ransomware incident response.

Networking

Setting Up a Squid Proxy Server on Linux: Access Control, Content Filtering, and Bandwidth Caching

April 8, 2026

Squid proxy server gives you fine-grained control over your network's outbound traffic — access control by IP or user, content filtering via domain blocklists, and HTTP caching to reduce bandwidth costs. This guide walks through a complete production-ready setup on Linux.

HomeLab

Ditch Port Forwarding: Build a Professional WireGuard VPN Gateway on OpenWrt

March 31, 2026

Stop exposing your HomeLab to hackers. This guide shows you how to build a high-speed WireGuard VPN Gateway on OpenWrt for secure, professional-grade remote access.

HomeLab

Set Up AdGuard Home on Your HomeLab: Block Ads, Malware, and Boost Network DNS Security

March 29, 2026

Boost your HomeLab's network security and privacy with AdGuard Home. This tutorial guides you through setting up AdGuard Home with Docker to block ads, malware, and customize DNS filtering for your entire network. Learn practical tips for advanced usage and troubleshooting.

HomeLab

Supercharge Your Home Network: Building a Powerful Router & Firewall with pfSense/OPNsense

March 22, 2026

Tired of your consumer router's limitations and security gaps? Discover how pfSense or OPNsense can transform your home network into a robust, secure, and highly configurable powerhouse, ideal for any HomeLab enthusiast. This guide covers essential setup, key features, and practical configuration examples.

Security

Mastering Network Defense: Deploying Suricata IDS/IPS on Linux

March 20, 2026

Deploy Suricata IDS/IPS on Linux to safeguard your network from modern cyber threats. This tutorial guides you through installation, configuration, and advanced techniques for effective intrusion detection and prevention, ensuring robust network security.

Networking

Zero Trust Network Architecture: A Six-Month Production Deep Dive

March 17, 2026

After 6 months of implementing Zero Trust Network Architecture in production, we've seen consistent stability and enhanced security. This article explains its core principles, offers a quick start, dives into its pillars, explores advanced usage, and provides practical tips for securing your network with Zero Trust.

Networking

Mastering NAT & Port Forwarding: A Practical Deep Dive

March 13, 2026

Understanding NAT and Port Forwarding is crucial for any IT professional managing network access. This guide delves into their practical applications, offering a step-by-step implementation for securing and exposing network services.